1 <?php

     2 

     3 /*

     4  * This file is part of the Assetic package, an OpenSky project.

     5  *

     6  * (c) 2010-2011 OpenSky Project Inc

     7  *

     8  * For the full copyright and license information, please view the LICENSE

     9  * file that was distributed with this source code.

    10  */

    11 

    12 namespace Assetic;

    13 

    14 use Assetic\Asset\AssetInterface;

    15 

    16 /**

    17  * Manages assets.

    18  *

    19  * @author Kris Wallsmith <kris.wallsmith@gmail.com>

    20  */

    21 class AssetManager

    22 {

    23     private $assets = array();

    24 

    25     /**

    26      * Gets an asset by name.

    27      *

    28      * @param string $name The asset name

    29      *

    30      * @return AssetInterface The asset

    31      *

    32      * @throws InvalidArgumentException If there is no asset by that name

    33      */

    34     public function get($name)

    35     {

    36         if (!isset($this->assets[$name])) {

    37             throw new \InvalidArgumentException(sprintf('There is no "%s" asset.', $name));

    38         }

    39 

    40         return $this->assets[$name];

    41     }

    42 

    43     /**

    44      * Checks if the current asset manager has a certain asset.

    45      *

    46      * @param string $name an asset name

    47      *

    48      * @return Boolean True if the asset has been set, false if not

    49      */

    50     public function has($name)

    51     {

    52         return isset($this->assets[$name]);

    53     }

    54 

    55     /**

    56      * Registers an asset to the current asset manager.

    57      *

    58      * @param string         $name  The asset name

    59      * @param AssetInterface $asset The asset

    60      */

    61     public function set($name, AssetInterface $asset)

    62     {

    63         if (!ctype_alnum(str_replace('_', '', $name))) {

    64             throw new \InvalidArgumentException(sprintf('The name "%s" is invalid.', $name));

    65         }

    66 

    67         $this->assets[$name] = $asset;

    68     }

    69 

    70     /**

    71      * Returns an array of asset names.

    72      *

    73      * @return array An array of asset names

    74      */

    75     public function getNames()

    76     {

    77         return array_keys($this->assets);

    78     }

    79 }